Hardness
Very Hard
264.5 PPM · 15.5 GPG
Local water dashboard
Official source aggregationA source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Coconino County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
264.5 PPM · 15.5 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0011 mg/L
7% of action level
Utility match
2 systems
Serves 125 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
264.5 PPM
Parts per million
264.5
mg/L as CaCO₃ equivalent
Grains per gallon
15.5
1 GPG ≈ 17.1 PPM
What this means at home
At 264.5 PPM, mineral scale can build up on fixtures and heating elements, reduce soap lather, and leave visible spotting. Hardness is primarily an aesthetic and appliance concern—not itself a tap-water safety rating.
USGS sites used
62
Nearest site
15.5 mi
Observation range
Jun 21, 2016–May 20, 2025
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: A-22-08 23AAB (Well).USGS source documentation ↗
Regional context
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Fort Valley median
265 PPM
About the same1 indexed ZIP readings · Range 264.5–264.5 PPM
Arizona median
241 PPM
24 PPM higher285 indexed ZIP readings · Range 66.4–1250 PPM
EPA benchmark screen
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
Lead (PB90)
0.0011 mg/L
Reported Dec 31, 2025
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 0.0011
EPA limit 0.015
Measured in MG/L
Local 0.011
EPA limit 0.01
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | AZ0403044 | Unaddressed | Feb 4, 2026 |
| Chlorine | AZ0403044 | Archived | Jan 1, 2026through Jan 31, 2026 |
| Lead and Copper Rule | AZ0403044 | Unaddressed | Jan 1, 2026 |
| Revised Total Coliform RuleHealth-based | AZ0408046 | Resolved | Dec 1, 2025through Dec 15, 2025 |
| Public Notice | AZ0403044 | Unaddressed | Nov 19, 2025 |
| Public Notice | AZ0403044 | Unaddressed | Nov 19, 2025 |
| Public Notice | AZ0403044 | Unaddressed | Nov 19, 2025 |
| Consumer Confidence Rule | AZ0403044 | Resolved | Oct 2, 2025through Oct 15, 2025 |
| Chlorine | AZ0403044 | Archived | Oct 1, 2025through Oct 31, 2025 |
| Lead and Copper Rule | AZ0403044 | Unaddressed | Oct 1, 2025 |
| Consumer Confidence Rule | AZ0403044 | Resolved | Jul 1, 2025through Oct 15, 2025 |
| Public Notice | AZ0403044 | Unaddressed | May 2, 2025 |
| Arsenic | AZ0408046 | Resolved | Apr 1, 2025through Jun 30, 2025 |
| Chlorine | AZ0403044 | Archived | Apr 1, 2025through Apr 30, 2025 |
| TTHM | AZ0403044 | Archived | Jan 1, 2025through Dec 31, 2025 |
| Total Haloacetic Acids (HAA5) | AZ0403044 | Archived | Jan 1, 2025through Dec 31, 2025 |
| Public Notice | AZ0403044 | Unaddressed | Dec 20, 2024 |
| Chlorine | AZ0403044 | Resolved | Dec 1, 2024through Dec 31, 2024 |
| Chlorine | AZ0403044 | Resolved | Nov 1, 2024through Nov 30, 2024 |
| LEAD AND COPPER RULE REVISIONS | AZ0403044 | Resolved | Oct 17, 2024through Nov 20, 2024 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Matched to Fort Valley ZIP 86001 using 264.5 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
264.5 PPM is 2× the high-hardness trigger used by this matcher.
Designed to reduce scale on fixtures, water heaters, glassware, and plumbing throughout the home.
Compare whole-house systemsDrinking water protection
Arsenic has a measured benchmark flag or active health-based SDWIS record in this profile.
A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.
Explore under-sink filtrationAffiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.
Frequently asked
EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
Nearby USGS observations produce an estimate of 264.5 PPM, or 15.5 grains per gallon, classified as very hard. This is not a household tap measurement.
At 264.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.